污水处理过程工艺参数对膜曝气生物膜反应器性能的影响

包进锋; 朱圆圆; 徐山田; 徐百龙; 曹利民; 黄霞

doi:10.13205/j.hjgc.202507011

污水处理过程工艺参数对膜曝气生物膜反应器性能的影响

doi: 10.13205/j.hjgc.202507011

1. 清华大学环境学院, 北京 100084;
2. 浙江开创环保科技股份有限公司, 杭州 310000

详细信息

作者简介:
包进锋（1972—），男，博士研究生，主要研究方向为膜法水处理。baojf@zjkchb.com

通讯作者:
黄霞（1963—），女，博士，教授，主要研究方向为水污染控制研究。xhuang@tsinghua.edu.cn

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出版历程
- 收稿日期: 2024-04-18
- 录用日期: 2024-06-30
- 修回日期: 2024-05-21
- 网络出版日期: 2025-09-11

Effects of wastewater treatment process parameters on performance of membrane-aerated biofilm reactors

1. School of Environment, Tsinghua University, Beijing 100084, China;
2. Zhejiang Kaichuang Env. Tech. Co, Ltd., Hangzhou 310000, China

摘要

摘要: 以市政污水为研究对象，对膜曝气生气膜反应器（MABR）工艺运行过程中的操作参数如运行压力、供气流量、混合液悬浮固体（MLSS）浓度、进水氨氮负荷、温度等进行考察，分析其对MABR性能的影响作用，并通过对比MABR区域硝化过程所需的氧气量与氧气传递速率（OTR）、氨氮与总氮的变化规律、微生物丰度检测等分析其脱氮性能。研究表明：供气压力在50~77 kPa时，MABR的供气压力对OTR及硝化速率（NR）无显著影响；供气流量在4.5~8.0 m³/h时MABR的供气流量与OTR呈正相关，而NR随着供气流量的升高呈现先升高后稳定的趋势；温度在14~30 ℃时MABR区的温度对其硝化性能影响较小；MABR区的MLSS与MABR的硝化性能无显著相关性；在提升MABR区氨氮负荷条件下，NR随着MABR区氨氮负荷的升高呈现先升高后稳定的趋势；MABR区氨氮减少量与总氮减少量呈正相关，MABR膜传递的氧气主要用于生物膜上的硝化作用；在微生物丰度上，MABR生物膜上的硝化菌丰度高于活性污泥系统。该研究对实际MABR工程的调试及运行提出了合理的指导意见。
- 膜曝气生物膜反应器 /
- 供气压力 /
- 供气流量 /
- 硝化性能 /
- 硝化速率 /
- 氧气传递速率
Abstract: Taking municipal wastewater as the research object， the operating parameters such as operating pressure， air flow rate， mixed liquor suspended solids （MLSS）， ammonia nitrogen （NH4+-N） load， and temperature of the membrane-aerated biofilm reactor （MABR） process were investigated to analyze the impacts on the performance of the MABR. The MABR membrane in this study was dense and non-porous， and the process was anaerobic + anoxic + aerobic （A²O） +MABR. The denitrification performance of the MABR was analyzed by comparing the oxygen demand for nitrification by nitrifying bacteria attached to the MABR membrane with oxygen transfer rate （OTR） of the membrane. Changes in NH4+-N and total nitrogen （TN） in the MABR zone， along with microbial abundance in the biofilm attached to the membrane， were also investigated to evaluate MABR denitrification efficiency. The study showed that the supply pressure of MABR had no significant effect on OTR of the MABR membrane within the range of 50~77 kPa， nor did it significantly affect the nitrification rate （NR）. In contrast， the air flow rate was positively correlated with the OTR within the range of 4.5~8.0 m³/h. The NR of the MABR initially increased and then stabilized with the increasing of the air flow rate. Temperature variations within 14℃ to 30℃ in the MABR zone showed no significant correlation with its nitrification performance. Similarly， the MLSS in the MABR zone also demonstrated no significant correlation with nitrification performance. The NR initially increased and then stabilized with the increasing of ammonia nitrogen load of MABR zone. There was a positive correlation between the reduction of ammonia nitrogen and total nitrogen in the MABR zone. The oxygen transported by the MABR membrane was mainly used for the nitrification process in the biofilm attached to the membrane surface. In terms of microbial abundance， the abundance of nitrifying bacteria on the MABR membrane was higher than that in the activated sludge system. Similarly， in terms of microbial quantity， the amount of nitrifying bacteria on the MABR membrane was also greater than that in the activated sludge system. In summary， the MABR exhibited a superior impact resistance compared to the conventional process. For actual MABR projects， this study provides reasonable guidance for commissioning and operation.
- membrane-aerated biofilm reactor /
- supply pressure /
- air flow rate /
- nitrification performance /
- nitrification rate /
- oxygen transfer rate

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